Fig. D.1.
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Relation between the X-ray excess variance and the combination of monochromatic luminosity and broad line FWHM for the Hβ line, σNXS2 = α(log(L)+βFWHM)+γ. N = 87; the legend is the same as the previous figures. Left: L is the 2-10 keV luminosity, b = 4, as predicted from the virial equation. Right: L is the 2-10 keV luminosity, b = 2. When b = 2, we observed a lower value of the dispersion.
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